java编程题求找错，以下是完整代码

Question

import java.util.Scanner;class zijin{ double z; double nl; int n; public zijin(){ } public zijin(double z,double nl,int n){ this.z=z; this.nl=nl; this.n=n; } public void setZ(double z){ this.z=z; } public double getZ(){ return z; } public void setNl(double nl){ this.nl=nl; } public double getNl(){ return nl; } public void setN(int n){ this.n=n; } public int getN(){ return n; } public double wl(double wl){ wl=z*(Math.pow(1+(nl/1200),12*n)); return wl; } public String wl() { // TODO Auto-generated method stub return "未来投资额为 "+wl(); } }public class Testzijin { public static void main(String[] args){ @SuppressWarnings("resource") Scanner c = new Scanner(System.in); zijin z1=new zijin(c.nextDouble(),c.nextDouble(),c.nextInt()); System.out.println(z1.wl()); }}

Answer 1

public double wl(double wl){ //改为 wltze()
 wl=z*(Math.pow(1+(nl/1200),12*n));
 return wl;
}

public String wl() {
// TODO Auto-generated method stub
return "未来投资额为 "+wl(); //改为 return "未来投资额为 "+wltze();
}
}